Collimator



Nov. 5, 1940. H. BERG 2,220,389

COLLIMATOR Filed July 7. 1937 WWWWW SS Patented Nov. 19.40l

UNITED sf'rA'rEs PATENT OFFICE yInu-lillsexxlLllferrrena Aliputiltlll Illy 7, 1937, SUN'NO. 152,425 Z (381ml. (G- SH2) My invention relates to collimators and morev particularly to collimators adaptable for attachment to various objects. such as guard rails, buildings and the like. l

.5 One of the principal objects of my invention is to provide a collimator equipped with means for reliably securing it to various objects such as guard rails, road signs. and the like and which will reect the rays of light directed thereon.

l0. Another object of my invention is to provide a readily attachable cllimator which is simple in construction, durable in` use and economical in manufacture.

Other objects and advantages will be apparent l5 -from the following description, appended claims and annexed drawing.

Referring to the drawing wherein like reference characters designate like parts throughout the several views:

2e Figure 1 is a vertical sectional view of my invention attached to a supporting object.

Figure 2 is a side elevation of a modified form of my invention Figure 3 is a side elevation, partly in-section,

2: of another modied form. i

Figure 4 is a detail sectional view taken on the line 4-4 of Figure 3.

Figure 5 is a side elevation of a further modiiication. 4

:au Figure 6 is a plan view of a modified form of head section. i

Figure 7 is a side elevation, partly in section, of a tool for attaching and detaching my invention to and from a supporting object.

:x5 In practicing my invention, as illustrated in Figure 1 of the drawing, I provide a body I5 having head and shank sections IB and I'I respectively.v The upper face of the head section is formed with a centrally disposed bore I8 termijn nating at its lower end in a reduced concave recess I9 and defining a circumferential shoulder at the jointure of the bore and recess. The head section is provided with a lower face overlying the outer face of a supporting object 22 4;, and with an upper edge portion disposed inwardly of the bore for forming a flange 23 for securing within the bore a lens 2l, the latter having an outwardly projecting dome-shaped section and constructed of colored glass or the like. Interso posed between the lens and the shoulder 20 is a gasket 25 constructed of any suitable material, for instance rubber or cork, which normally tends to seat the lens in said bore in a fixed and tensioned condition against the flange 23. The

s:- shank section I1 is disposed through an opening 2l formed in the object 22 and is provided with threads I3 on which is threaded a nut Il coacting with the base of the -head to secure the device iixed Ito the object 22.- The nut Il is provided on its inner face with a plurality of cone-shaped .I members- Il for engagement with the rear face of thel supporting object to preclude accidental displacement of the nut. l i

vIn the modified form illustrated in Figure 2 o! the drawing the shank section is provided with 1o threads Il threaded into a metal supporting ob- In the modided form illustrated in Figure 3 of the drawing .the shank section II is particularly V adapted for use in connection with a 1| relatively thick supporting object 3l and is provided with threads 31 on its lower end on which is threaded a nut for securing the-device to .the object Il. The nut 3l is provided on its inner face with a plurality of teeth Il for engagement zo with the supporting object to prevent displacement of the nut, as illustrated in Figure 4 of the drawing'. f

In the modified form illustrated in Figure 5 of the drawing the head section is connected 25 to a shank section fashioned in the form of a lag screw Il for retaining the body in relatively thick supporting objects constructed oi' wood, for instance logs or the like.

The head sections of the foregoing described I) forms are of a frustum-shaped conguration having their peripheral faces formed with circumferentially disposed and lengthwise extending corrugations for a purpose hereinafter set forth. 85

-of the head sections are highly polished or may be provided with suitable material for reflecting light rays directed thereon through said lens.

It will be apparent, from the foregoing, that my device is readily adaptable for attachment to various objects, such as signs, buildings, guard rails, fence posts and the like and that rays of light directed thereon will be reected and serve to acquaint motorists and others of the presence of such objects. v 66 It is to be distinctly understood that the term coliimator, as used herein, is to be interpreted .in the broadest sense and embraces various re-v ecting devices for reflecting rays oi' light.

In the form illustrated in Fig. 6, the corrugations l5 are formed in groups about the outer periphery of the body I6 to prevent the ready removal of the collimator by persons not possessed of a tool having similarly grouped corrugations. l It is to be further understood that various changes and modifications in construction and arrangement of the parts may be resorted to without departing from the spirit of the invention as defined by the appended claims.

Having described my invention, what I claim is:

1. A device of the character described, comprising, a body formed with head and shank sections, said head section adapted to overlie the outer tace of a supporting object and provided with a centrally disposed lens protruding axially therefrom, said head section formed with a centrally disposed concaved recess postjacent said lens and with the' wall defining said recess having a polished surface for .reflecting light rays outwardly through said lens, said shank section adapted to extend through said object and provided with threaded means coacting with the said head section for maintaining said head section iixed to said object, said head section having a peripheral face formed with circumferentially disposed and lengthwise extending corrugations adapted for intertitting engagement with similar corrugations arranged within the socket of a tool when said head section is disposed within said socket whereby to effect rotation of said body with respect to said object by said tool.

2. A device of the character described, comprising, a body formed with head and shank sections, said head section adapted to overlie the outer face oi' a supporting object and provided with a centrally disposed lens protruding axially therefrom, said h'ead section formed with a centrally disposed concaved recess postjacent said lens and with the wall defining said recess having a polished surface for reecting light rays outwardly through said lens, said shank section adapted to extend through said object and `pro vided with threaded means coacting with said head section for maintaining said head section xed to said object, said head section having a peripheral face formed with circumierentially disposed and lengthwise extending spaced groups of corrugations adapted for intertting engagement .with similar groups of corrugations arranged Within the socket of a tool when said head section is disposed within said socket whereby to effect rotation of said body with respect to said object by said tool.

HAROLD BERG. 

